Briquetting press with briquette removal mechanism

ABSTRACT

A briquetting press of the stationary anvil movable die type provided with mechanism for engaging a briquette that sticks to the anvil upon retraction of the die to forcibly remove the briquette from the anvil. The mechanism is actuated incident to movement of the die and the associated chip box.

States Patent 1 [111 736 it h l] [451 ay 29, W73

[54] BRKQUETTING PRESS WITH [56] References Cited BRIQUETTE REMOVAL MECHANISM UNITED STATES PATENTS [75] inventor: Robe" Solon Ohm 2,393,130 1/1946 Toulmin ..425/78 x [73] Assignee: Combustion Engineering, Inc., 2,404,559 7/1946 Windsor, Conn. 2,738,550 3/1956 3,070,003 12/1962 [22] F1led: Dec. 29, 1971 21 App]. No.: 213,367 ar amine BQWIQFBQB Attorney-Harris G. uther and Radford W. Luther [52] US. Cl. ..425/78, 425/412, 45254743262, [57] ABSTRACT 51 Int. Cl. .3301 11/04 A briquefling Press of the Stationary anvil movable die Field of Search ..425/78, 406, 412, type provided with mechanism for engaging 5 4 5 422, 5 5 57 18/16 R, briquette that sticks to the anvil upon retraction of the 1 5 16.7 1 F die to forcibly remove the briquette from the anvil.

The mechanism is actuated incident to movement of the die and the associated chip box.

8 Claims, 9 Drawing Figures PATENTEL W29 I975 MEEI 1 OF 3 FIG -3 PATENTEB HAY 2 9 I973 SHEET 2 [IF 3 FIG -6 BRIQUETTING PRESS WITH BRIQUETTE REMOVAL MECHANISM BACKGROUND OF THE INVENTION In the operation of a briquetting press of the stationary anvil movable die type the briquette is formed by moving the die into engagement with the anvil and then moving the ram shaft through the chip box and into the die to compact the metallic chips into a briquette of the form designated by the die. The die is then removed and then the ram shaft is retracted. The briquette is then supposed to fall onto a suitable receiving device for removal from the press. If the briquette sticks to the anvil, there is produced a malfunction of the press which necessitates shutting the press down and manually clearing the machine. To overcome this problem there is provided in accordance with the present invention mechanism to forcibly remove the briquette from the anvil after the retraction of the die and the ram shaft.

SUMMARY OF THE INVENTION This briquette removal mechanism includes an arm which is spring biased to a position to engage a briquette stuck to the anvil. A suitable actuating mechanism is effective to move this arm against its spring bias away from the region of the anvil. This actuating mechanism is operated incident to the movement of the die and its associated chip box from its retracted position toward the position where it engages the anvil. Cam and cam follower mechanism are provided for this purpose and the arm is mounted on a suitable rotating member which permits its movement to and from the active position where it engages a briquette on the anvil and a remote position where it is laterally spaced from this active position.

Accordingly it is an object of the present invention to provide a briquetting press of the stationary anvil movable die type with means for removing from the anvil a briquette that is stuck thereto with this means being operated by and incident to movement of the die and its associated chip box.

This and'other objects and advantages of the present invention will become apparent when considered in view of the following detailed description and annexed drawings.

BRIEF DESCRIPTION OF THE DRAWINGS p of FIG. 6 with portions being in section.

FIG. 9 is a sectional view of the drum cam which forms a part of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings, wherein like reference numerals are used throughout to designate like elements, FIGS. 1 through diagrammatically show a briquetting press of the fixed anvil movable die type and illustrate the sequence of operation of the press.

FIG. 1 shows the press with its movable chip box 10 and die 12 in the position where the die engages the anvil 14 secured to the stationary frame member 16. In this FIG. 1 position the ram shaft 18 is in its retracted position where the tip of the shaft is located just within the far end of the wall of the chip box. In FIG. 2 the ram shaft 18 has been moved as by hydraulic motor 20 to its forward position wherein the shaft 18 passes across the chip box and the tip of the shaft extends into the die 12 to form the briquette 22 against the anvil 14. In FIG. 3 the chip box and die have been moved as by means of hydraulic motor 24 to their retracted position where the die is spaced from the anvil 14. Next, as shown in FIG. 4, the ram shaft 18 is moved to its retracted position and the briquette is then to be removed from the anvil and to fall by gravity onto a suitable receiving device such as belt 26. FIG. 5 shows the chip box and anvil moved into the forward position again for a repetition of the cycle.

In order to insure that briquette 22 will not stick to anvil 12 when the die and chip box are retracted and the ram shaft is retracted, all as shown in FIG. 4, there is provided a cam actuated spring biased mechanism for applying a lateral force to a briquette that may stick and thereby insure that it is removed from the anvil. This mechanism includes the stationary shaft 28 fixedly secured to the end frame 16 and about which is positioned the cylindrical member 30. This member is journaled to the shaft by means of bearings 32 and 34 with there being a suitable shoulder and retainer ring associated with these bearings to prevent axial movement of member 30 relative to shaft 28 while permitting free rotative movement of member 30 on the shaft. Secured to the end of member 30 adjacent the end frame 16, as by welding, and extending radially from this member 30 is arm 36. This arm is so positioned that it may move about the axis of rotation of member 30 downward to a position where it may engage a briquette stuck to anvil 14 and upward to a remote position where it is out of the way of die 12 and spaced from the region of the anvil where the briquette is formed.

The arm 36 is spring biased into its briquette engaging position (shown generally in dotted lines in FIG. 7) and is cam operated to its remote position (shown in solid lines in FIG. 7). The spring bias is provided by tension spring 38 connected at one end to arm 40 and at the other end to the frame through a suitable connector device 42. The arm 40 is secured to member 32 as by welding and extends radially from this member. This arm may be provided with a suitable recess into which the end of the spring fits with there being a pin extending across the recess and engaging the spring. The connector 42 may have a similar construction.

The camming action to move the arm 36 from its briquette engaging to its remote position is produced by means of the drum cam 44 which by means of brackets 45 is mounted on the movable portion of the briquette press that includes the portion upon which the die and chip box are mounted. This drum cam telescopes over the cylindrical member 30 and has a cam surface 46 as depicted in FIG. 9 formed in the wall thereof. The cylindrical member 30 is provided with a cam follower member 48. As the drum cam moves toward the end frame 16 incident to moving the chip box and die toward the anvil the cam follower will, through the action of cam surface 46, cause member 30 to rotate about its axis so as to move the arm 36 from its dotted to its solid line position in FIG. 7. The disposition of the cam follower with relation to the cam surface is such that arm 36 is moved out of the way of die 12 sufficiently prior to the die engaging the anvil so that there is no interference in this regard.

When the chip box and die are moved to their retracted position remote from the anvil the action of cam surface 46 and follower 48 is such as to permit the arm 36 to move through the action of spring 38 to the position where the arm will engage the briquette. Typically the arm 36 may apply a force of 90 pounds laterally to the briquette. This will insure removal of the briquette from the anvil upon retraction of the ram shaft. The cam surface 46 includes straight portions 50 and 52 interconnected by the inclined portion 54. The inclination of portion 54 is such that upon movement of the drum cam 44 away from anvil 14 the arm 36 is lowered in a fashion so that it will gently engage a briquette that may be stuck to the anvil. It is not brought down against this briquette in a manner to strike it with a sharp blow which would tend to damage the briquette and perhaps cause portions of it to be chipped away. The arm 36 has a slight overtravel with relation to its engagement with the briquette. The position of the arm shown in dotted lines in FIG. 7 is in its furthest rotative position in a clockwise direction with the cam follower 48 thereof limiting the rotative positioning of the arm by engaging surface 50. it will be seen that in FIG. 7 the arm 36 will engage a briquette that may be stuck to the anvil prior to its reaching this furthest clockwise rotative position. A stuck briquette would occupy the position identified as 22.

it will be understood that the embodiment shown and described herein is merely illustrative and that changes may be made without departing from the scope of the inventionas claimed.

What is claimed is:

1. A briquetting press comprising in combination frame means, a stationary anvil on said frame means, means for forming a briquette against said anvil including means moving into and out of engagement with said anvil and means for removing said briquette from said anvil when said forming means moves away therefrom, said removing means including means to engage a briquette stuck to said anvil incident to said forming means moving away from said anvil and means to move said engaging means away from said anvil incident to said forming means moving toward and into engagement with the anvil.

2. The briquetting press of claim 1 wherein said engaging means is resiliently biased into engagement with a briquette stuck to the anvil.

3. The briquetting press of claim 1 wherein said removing means includes a cam arrangement operative to cam said engaging means away from said anvil incident to movement of the forming means toward the anvil.

4. The briquetting press of claim 3 wherein the engaging means is spring biased toward the region of the anvil for engagement with a briquette stuck to the anvil.

5. The briquetting press of claim 1 wherein the removing means includes a sleeve journaled to a support that is secured to and extends from the frame means with the journal axis being parallel with the direction of movement of the forming means toward and away from the anvil, said engaging means includes an arm secured to said sleeve, means for biasing said arm to a position to engage a briquette stuck to the anvil and cam means effective to move said arm about said axis away from said position incident to movement of the forming means toward the anvil.

6. The briquetting press of claim 5 wherein the movable forming means includes a die and a chip box assembly disposed so the die moves into engagement with the anvil for forming a briquette against the anvil, and the cam means includes a drum cam mounted on said assembly and disposed about said sleeve with said sleeve having a cam follower engaging a cam surface on said drum cam.

7. The organization of claim 6 wherein an additional arm is secured to said sleeve and a spring is fastened to said arm and to a stationary portion of the briquetting press to bias the first-mentioned arm into a position to engage a briquette stuck to the anvil.

8. A briquetting press comprising in combination a frame means, a stationary anvil mounted on said frame means, means for forming briquette against said anvil, including a die and chip box assembly movable to and from a position where the die engages the anvil and a remote position where the die is spaced from the anvil, means for engaging a briquette that may be stuck to said anvil to apply a lateral force thereto to remove the same from the anvil, this last-named means including a briquette engaging arm rotatively mounted generally about an axis parallel with the direction of movement of the die and chip box assembly for rotation to and from a position where said arm will engage a stuck briquette and a position where it will be out of the way of the die engaging said anvil, means for rotatively moving said arm to and from these positions including a cam means having a portion mounted on the die and chip box assembly and movable therewith and a portion engaging this portion and rotating with said arm, spring means urging said arm into the position for engaging a stuck briquette and said cam means being effective to move said arm from the latter position to its position out of the way of the die upon movement of the die and chip box from its remote position to the position where the die engages the anvil. 

1. A briquetting press comprising in combination frame means, a stationary anvil on said frame means, means for forming a briquette against said anvil including means moving into and out of engagement with said anvil and means for removing said briquette from said anvil when said forming means moves away therefrom, said removing means including means to engage a briquette stuck to said anvil incident to said forming means moving away from said anvil and means to move said engaging means away from said anvil incident to said forming means moving toward and into engagement with the anvil.
 2. The briquetting press of claim 1 wherein said engaging means is resiliently biased into engagement with a briquette stuck to the anvil.
 3. The briquetting press of claim 1 wherein said removing means includes a cam arrangement operative to cam said engaging means away from said anvil incident to movement of the forming means toward the anvil.
 4. The briquetting press of claim 3 wherein the engaging means is spring biased toward the region of the anvil for engagement with a briquette stuck to the anvil.
 5. The briquetting press of claim 1 wherein the removing means includes a sleeve journaled to a support that is secured to and extends from the frame means with the journal axis being parallel with the direction of movement of the forming means toward and away from the anvil, said engaging means includes an arm secured to said sleeve, means for biasing said arm to a position to engage a briquette stuck to the anvil and cam means effective to move said arm about said axis away from said position incident to movement of the forming means toward the anvil.
 6. The briquetting press of claim 5 wherein the movable forming means includes a die and a chip box assembly disposed so the die moves into engagement with the anvil for forming a briquette against the anvil, and the cam means includes a drum cam mounted on said assembly and disposed about said sleeve with said sleeve having a cam follower engaging a cam surface on said drum cam.
 7. The organization of claim 6 wherein an additional arm is secured to said sleeve and a spring is fastened to said arm and to a stationary portion of the briquetting press to bias the first-mentioned arm into a position to engage a briquette stuck to the anvil.
 8. A briquetting press comprising in combination a frame means, a stationary anvil mounted on said frame means, means for forming briquette against said anvil, including a die and chip box assembly movable to and from a position where the die engages the anvil and a remote position where the die is spaced from the anvil, means for engaging a briquette that maY be stuck to said anvil to apply a lateral force thereto to remove the same from the anvil, this last-named means including a briquette engaging arm rotatively mounted generally about an axis parallel with the direction of movement of the die and chip box assembly for rotation to and from a position where said arm will engage a stuck briquette and a position where it will be out of the way of the die engaging said anvil, means for rotatively moving said arm to and from these positions including a cam means having a portion mounted on the die and chip box assembly and movable therewith and a portion engaging this portion and rotating with said arm, spring means urging said arm into the position for engaging a stuck briquette and said cam means being effective to move said arm from the latter position to its position out of the way of the die upon movement of the die and chip box from its remote position to the position where the die engages the anvil. 